Theory of the c-Axis Penetration Depth in the Cuprates
Abstract
Recent measurements of the London penetration depth tensor in the cuprates find a weak temperature dependence along the c-direction which is seemingly inconsistent with evidence for d-wave pairing deduced from in-plane measurements. We demonstrate in this paper that these disparate results are not in contradiction, but can be explained within a theory based on incoherent quasiparticle hopping between the CuO2 layers. By relating the calculated temperature dependence of the penetration depth \lambda_c(T) to the c-axis resistivity, we show how the measured ratio \lambda_c^2(0) / \lambda_c^2(T) can provide insight into the behavior of c-axis transport below Tc and the related issue of ``confinement.''
Keywords
Cite
@article{arxiv.cond-mat/9509171,
title = {Theory of the c-Axis Penetration Depth in the Cuprates},
author = {R. J. Radtke and V. N. Kostur and K. Levin},
journal= {arXiv preprint arXiv:cond-mat/9509171},
year = {2009}
}
Comments
4 pages, REVTEX with psfig, 3 PostScript figures included in compressed form